On the 25th anniversary of the massacre that broke up pro-democracy protests in Beijing's Tiananmen Square, China's government is quashing many attempts to mention the fateful date, with heavy security and online monitoring.

Wearing a red Union Bank polo shirt, high school senior Jerry Liu politely helps a peer with a bank deposit. With a waiting area and even a decorative plant on the table, this could be any bank branch — but right outside this island of adulthood are the hallways of Lincoln High School in Los Angeles.